Adding Subframe Connectors - Full Framed F-Body - CHP Step By Step

Getting Connected With Subframe Connectors

Second-gen Camaros aren't exactly well known for their all-out, performance-oriented suspension. In fact, GM used a lot of carryover suspension components from the first-generation to second-generation Camaro. By doing so, it's safe to say that our '81 disco-era Camaro was rolling on 14-year-old technology even when brand new.

2/12

If you recall, we have almost completely revamped the entire underside of this Camaro. Our June '09 issue featured a full PST steering rebuild ("Breaking It Down") while in our most recent issue ("Stiff Upper Lip," May '10) we illustrated a front to rear replacement of the shocks, coil springs, and rear leaf springs with all new PST polyurethane body bushings up front. In our efforts to stiffen up the aging subframe and body we had one last upgrade to complete.

The owner of this Camaro already has a 496-inch iron sledgehammer that makes well over 500 hp. While this Camaro is destined for heavy street use, owner Michael Consolo has every intention of hitting up weekly grudge nights at the dragstrip. It's because of this that we questioned the Camaro's ability to adequately handle the massive torque from the big-block.

The good news is that there's a wide variety of components available these days and the need for a one-off or custom component aren't necessary to get the job done. The best part is, since they're off-the-shelf parts, costs are cut and it helps to keep build tallies on the lower side because no fabrication is required.

3/12

Taking advantage of the current suspension offerings in the aftermarket, we opted to add a set of subframe connectors from PST to finish up our suspension revamp. These connectors are simple to use, extremely affordable, and once installed the flimsy chassis is instantly rigid, emulating a full-frame sled.

To complete the project, we went back at Lou's Performance in Sun Valley, California, where Lou and the gang got down to business installing our new pieces. While these subframe connector kits from PST are completely bolt-in, we decided to weld them in instead for a more permanent fitment.

Quick Notes

What We Did
Add structural rigidity to our '81 disco Camaro

Bottom Line
Eliminated chassis flex on a budget

Cost (Approx)
$250

Sources

MORE PHOTOS

VIEW FULL GALLERY

xclose

Adding Subframe Connectors - Full Framed F-Body - CHP Step By Step

Right out of the box, the PST subframe connectors are ready to be installed. If you prefer to bolt them in, all the necessary hardware, including the bolts, washers, and nuts are supplied to get the job done. In our case, we had the equipment on hand to weld them in and decided to go with a more permanent fit.

To begin, Juan Arreola laid the connectors into what would be its new home to check for clearances between the front and rear subframes.

Once sized up for fitment, we needed to clean the entire area. Arreola whipped out an air-powered sanding disc and proceeded to remove years of corrosion and the undercoating. Arreola did this to both the driver and passenger sides.

Arreola again test-fitted the connectors underneath the Camaro to make sure there was enough bare metal exposed. This would ensure that he could get a solid weld.

With the sanding complete, Arreola lined up the connector's boltholes with the factory holes in the rear subframe. He then scribed the location for welding.

It's crucial to remove anything that would prevent the welds from penetratintg the metal. In this instance, owner Lou Zamora took a sanding disc to all the corners and outsides of the PST connetors to remove the powdercoating.

When welding in the connectors, be sure to remove some of the powdercoating from the inside of the connectors. By removing the coating, it'll ensure ample penetration. Zamora used a steel grinding bit to get the job done.

Fit several times and weld once. After a final mock-up, Zamora made sure the holes were lined up correctly with the scribe marks and applied the initial weld, all the while checking for any clearance issues.

After the subframe connectors were lined up, Zamora fired up the welder and filled in all of the pre-drilled holes. From there he ran a bead along the edge of each connector. With one subframe connector welded into place, it was only a matter of applying the same technique to the other side.

With the welding complete, our last step was to apply black spray paint to the unprotected metal, which will help to keep them rust free. After a couple of hours, this '81 Camaro is ready for its big-block-bring on the twist!

Check out Todd Nelson's 1970 Chevrolet Chevelle SS! This car has a clean and sleek personality, from the beautiful black-as-night exterior paint to the flawless high quality leather interior. » Read More

Most people look past the small 4.8L engine and go straight for the bigger ones. In this Little LS Slugfest, we compare both stock and modified versions of the 4.8L and 5.3L engines, now you be the judge! » Read More